/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:17:37,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:17:37,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:17:37,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:17:37,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:17:37,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:17:37,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:17:37,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:17:37,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:17:37,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:17:37,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:17:37,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:17:37,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:17:37,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:17:37,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:17:37,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:17:37,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:17:37,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:17:37,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:17:37,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:17:37,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:17:37,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:17:37,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:17:37,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:17:37,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:17:37,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:17:37,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:17:37,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:17:37,949 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:17:37,976 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:17:37,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:17:37,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:17:37,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:17:37,978 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:17:37,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:17:37,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:17:37,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:17:37,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:17:37,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:17:37,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:17:37,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:17:37,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:17:37,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:17:37,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:17:37,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:17:37,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:17:37,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:17:37,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:17:37,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:17:37,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:17:37,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:17:37,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:17:37,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:17:37,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:17:37,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:17:38,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:17:38,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:17:38,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:17:38,410 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:17:38,411 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:17:38,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:17:38,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db5a55721/bacfa2171232451ba995303fb30b8d9b/FLAG85d4d1079 [2020-12-22 08:17:39,379 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:17:39,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:17:39,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db5a55721/bacfa2171232451ba995303fb30b8d9b/FLAG85d4d1079 [2020-12-22 08:17:39,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db5a55721/bacfa2171232451ba995303fb30b8d9b [2020-12-22 08:17:39,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:17:39,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:17:39,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:17:39,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:17:39,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:17:39,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:17:39" (1/1) ... [2020-12-22 08:17:39,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d617b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:39, skipping insertion in model container [2020-12-22 08:17:39,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:17:39" (1/1) ... [2020-12-22 08:17:39,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:17:39,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:17:39,898 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[7708,7721] [2020-12-22 08:17:39,938 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13820,13833] [2020-12-22 08:17:39,968 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15907,15920] [2020-12-22 08:17:39,987 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16931,16944] [2020-12-22 08:17:40,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:17:40,238 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:17:40,310 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[7708,7721] [2020-12-22 08:17:40,335 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13820,13833] [2020-12-22 08:17:40,350 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15907,15920] [2020-12-22 08:17:40,361 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16931,16944] [2020-12-22 08:17:40,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:17:40,628 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:17:40,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:40 WrapperNode [2020-12-22 08:17:40,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:17:40,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:17:40,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:17:40,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:17:40,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:40" (1/1) ... [2020-12-22 08:17:40,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:40" (1/1) ... [2020-12-22 08:17:40,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:17:40,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:17:40,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:17:40,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:17:40,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:40" (1/1) ... [2020-12-22 08:17:40,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:40" (1/1) ... [2020-12-22 08:17:40,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:40" (1/1) ... [2020-12-22 08:17:40,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:40" (1/1) ... [2020-12-22 08:17:40,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:40" (1/1) ... [2020-12-22 08:17:40,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:40" (1/1) ... [2020-12-22 08:17:40,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:40" (1/1) ... [2020-12-22 08:17:40,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:17:40,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:17:40,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:17:40,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:17:40,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:17:41,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:17:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:17:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:17:41,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:17:42,941 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:17:42,942 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:17:42,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:17:42 BoogieIcfgContainer [2020-12-22 08:17:42,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:17:42,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:17:42,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:17:42,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:17:42,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:17:39" (1/3) ... [2020-12-22 08:17:42,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339782e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:17:42, skipping insertion in model container [2020-12-22 08:17:42,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:17:40" (2/3) ... [2020-12-22 08:17:42,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339782e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:17:42, skipping insertion in model container [2020-12-22 08:17:42,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:17:42" (3/3) ... [2020-12-22 08:17:42,954 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:17:42,961 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:17:42,967 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-22 08:17:42,988 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 08:17:43,019 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:17:43,019 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:17:43,020 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:17:43,020 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:17:43,020 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:17:43,020 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:17:43,020 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:17:43,020 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:17:43,059 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-12-22 08:17:43,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 08:17:43,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:43,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:43,080 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:43,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:43,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1113444986, now seen corresponding path program 1 times [2020-12-22 08:17:43,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:43,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012220691] [2020-12-22 08:17:43,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:43,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012220691] [2020-12-22 08:17:43,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:43,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:43,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946683143] [2020-12-22 08:17:43,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:43,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:43,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:43,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:43,525 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 3 states. [2020-12-22 08:17:43,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:43,709 INFO L93 Difference]: Finished difference Result 689 states and 1213 transitions. [2020-12-22 08:17:43,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:17:43,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-12-22 08:17:43,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:43,754 INFO L225 Difference]: With dead ends: 689 [2020-12-22 08:17:43,755 INFO L226 Difference]: Without dead ends: 545 [2020-12-22 08:17:43,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:43,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-12-22 08:17:43,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 539. [2020-12-22 08:17:43,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-12-22 08:17:43,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 718 transitions. [2020-12-22 08:17:43,908 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 718 transitions. Word has length 49 [2020-12-22 08:17:43,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:43,908 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 718 transitions. [2020-12-22 08:17:43,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:43,909 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 718 transitions. [2020-12-22 08:17:43,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 08:17:43,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:43,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:43,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:17:43,914 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:43,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:43,918 INFO L82 PathProgramCache]: Analyzing trace with hash 969247668, now seen corresponding path program 1 times [2020-12-22 08:17:43,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:43,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935023765] [2020-12-22 08:17:43,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:44,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935023765] [2020-12-22 08:17:44,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:44,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:44,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913085653] [2020-12-22 08:17:44,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:44,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:44,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:44,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:44,067 INFO L87 Difference]: Start difference. First operand 539 states and 718 transitions. Second operand 3 states. [2020-12-22 08:17:44,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:44,144 INFO L93 Difference]: Finished difference Result 954 states and 1328 transitions. [2020-12-22 08:17:44,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:17:44,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-12-22 08:17:44,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:44,149 INFO L225 Difference]: With dead ends: 954 [2020-12-22 08:17:44,149 INFO L226 Difference]: Without dead ends: 713 [2020-12-22 08:17:44,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:44,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-12-22 08:17:44,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 707. [2020-12-22 08:17:44,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2020-12-22 08:17:44,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 960 transitions. [2020-12-22 08:17:44,186 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 960 transitions. Word has length 49 [2020-12-22 08:17:44,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:44,186 INFO L481 AbstractCegarLoop]: Abstraction has 707 states and 960 transitions. [2020-12-22 08:17:44,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:44,186 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 960 transitions. [2020-12-22 08:17:44,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 08:17:44,189 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:44,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:44,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:17:44,190 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:44,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:44,190 INFO L82 PathProgramCache]: Analyzing trace with hash 533282259, now seen corresponding path program 1 times [2020-12-22 08:17:44,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:44,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022959470] [2020-12-22 08:17:44,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:44,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:44,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022959470] [2020-12-22 08:17:44,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:44,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:44,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530914398] [2020-12-22 08:17:44,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:44,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:44,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:44,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:44,350 INFO L87 Difference]: Start difference. First operand 707 states and 960 transitions. Second operand 3 states. [2020-12-22 08:17:44,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:44,481 INFO L93 Difference]: Finished difference Result 1363 states and 1911 transitions. [2020-12-22 08:17:44,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:17:44,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-12-22 08:17:44,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:44,494 INFO L225 Difference]: With dead ends: 1363 [2020-12-22 08:17:44,495 INFO L226 Difference]: Without dead ends: 1034 [2020-12-22 08:17:44,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:44,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-12-22 08:17:44,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1027. [2020-12-22 08:17:44,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1027 states. [2020-12-22 08:17:44,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1412 transitions. [2020-12-22 08:17:44,578 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1412 transitions. Word has length 49 [2020-12-22 08:17:44,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:44,580 INFO L481 AbstractCegarLoop]: Abstraction has 1027 states and 1412 transitions. [2020-12-22 08:17:44,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:44,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1412 transitions. [2020-12-22 08:17:44,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 08:17:44,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:44,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:44,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:17:44,583 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:44,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:44,584 INFO L82 PathProgramCache]: Analyzing trace with hash 388998377, now seen corresponding path program 1 times [2020-12-22 08:17:44,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:44,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389531559] [2020-12-22 08:17:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:44,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389531559] [2020-12-22 08:17:44,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:44,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:17:44,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564530259] [2020-12-22 08:17:44,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:17:44,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:44,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:17:44,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:17:44,737 INFO L87 Difference]: Start difference. First operand 1027 states and 1412 transitions. Second operand 6 states. [2020-12-22 08:17:45,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:45,307 INFO L93 Difference]: Finished difference Result 2559 states and 3607 transitions. [2020-12-22 08:17:45,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:17:45,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-12-22 08:17:45,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:45,318 INFO L225 Difference]: With dead ends: 2559 [2020-12-22 08:17:45,319 INFO L226 Difference]: Without dead ends: 1697 [2020-12-22 08:17:45,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:17:45,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-12-22 08:17:45,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1677. [2020-12-22 08:17:45,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1677 states. [2020-12-22 08:17:45,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 2368 transitions. [2020-12-22 08:17:45,414 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 2368 transitions. Word has length 49 [2020-12-22 08:17:45,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:45,415 INFO L481 AbstractCegarLoop]: Abstraction has 1677 states and 2368 transitions. [2020-12-22 08:17:45,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:17:45,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 2368 transitions. [2020-12-22 08:17:45,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 08:17:45,417 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:45,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:45,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:17:45,418 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:45,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:45,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1582595724, now seen corresponding path program 1 times [2020-12-22 08:17:45,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:45,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903972277] [2020-12-22 08:17:45,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:45,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903972277] [2020-12-22 08:17:45,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:45,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:17:45,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23461763] [2020-12-22 08:17:45,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:17:45,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:45,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:17:45,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:17:45,576 INFO L87 Difference]: Start difference. First operand 1677 states and 2368 transitions. Second operand 5 states. [2020-12-22 08:17:46,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:46,070 INFO L93 Difference]: Finished difference Result 3696 states and 5272 transitions. [2020-12-22 08:17:46,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:17:46,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-12-22 08:17:46,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:46,084 INFO L225 Difference]: With dead ends: 3696 [2020-12-22 08:17:46,084 INFO L226 Difference]: Without dead ends: 2199 [2020-12-22 08:17:46,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:17:46,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2020-12-22 08:17:46,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 1609. [2020-12-22 08:17:46,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1609 states. [2020-12-22 08:17:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2267 transitions. [2020-12-22 08:17:46,218 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2267 transitions. Word has length 50 [2020-12-22 08:17:46,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:46,218 INFO L481 AbstractCegarLoop]: Abstraction has 1609 states and 2267 transitions. [2020-12-22 08:17:46,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:17:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2267 transitions. [2020-12-22 08:17:46,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 08:17:46,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:46,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:46,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:17:46,221 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:46,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:46,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1245141101, now seen corresponding path program 1 times [2020-12-22 08:17:46,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:46,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931288925] [2020-12-22 08:17:46,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:46,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:46,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931288925] [2020-12-22 08:17:46,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:46,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:17:46,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267462951] [2020-12-22 08:17:46,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:17:46,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:46,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:17:46,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:17:46,307 INFO L87 Difference]: Start difference. First operand 1609 states and 2267 transitions. Second operand 6 states. [2020-12-22 08:17:46,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:46,854 INFO L93 Difference]: Finished difference Result 4589 states and 6535 transitions. [2020-12-22 08:17:46,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:17:46,855 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-12-22 08:17:46,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:46,871 INFO L225 Difference]: With dead ends: 4589 [2020-12-22 08:17:46,871 INFO L226 Difference]: Without dead ends: 3098 [2020-12-22 08:17:46,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:17:46,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2020-12-22 08:17:47,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 3063. [2020-12-22 08:17:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3063 states. [2020-12-22 08:17:47,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 4352 transitions. [2020-12-22 08:17:47,090 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 4352 transitions. Word has length 50 [2020-12-22 08:17:47,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:47,090 INFO L481 AbstractCegarLoop]: Abstraction has 3063 states and 4352 transitions. [2020-12-22 08:17:47,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:17:47,091 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 4352 transitions. [2020-12-22 08:17:47,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:17:47,096 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:47,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:47,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:17:47,098 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:47,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:47,099 INFO L82 PathProgramCache]: Analyzing trace with hash -2025988922, now seen corresponding path program 1 times [2020-12-22 08:17:47,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:47,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102048281] [2020-12-22 08:17:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:47,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102048281] [2020-12-22 08:17:47,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:47,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:17:47,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143826405] [2020-12-22 08:17:47,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:17:47,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:47,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:17:47,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:17:47,232 INFO L87 Difference]: Start difference. First operand 3063 states and 4352 transitions. Second operand 7 states. [2020-12-22 08:17:48,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:48,868 INFO L93 Difference]: Finished difference Result 11526 states and 16627 transitions. [2020-12-22 08:17:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:17:48,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-12-22 08:17:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:48,915 INFO L225 Difference]: With dead ends: 11526 [2020-12-22 08:17:48,916 INFO L226 Difference]: Without dead ends: 10474 [2020-12-22 08:17:48,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:17:48,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10474 states. [2020-12-22 08:17:49,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10474 to 3075. [2020-12-22 08:17:49,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3075 states. [2020-12-22 08:17:49,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3075 states to 3075 states and 4368 transitions. [2020-12-22 08:17:49,342 INFO L78 Accepts]: Start accepts. Automaton has 3075 states and 4368 transitions. Word has length 51 [2020-12-22 08:17:49,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:49,342 INFO L481 AbstractCegarLoop]: Abstraction has 3075 states and 4368 transitions. [2020-12-22 08:17:49,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:17:49,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 4368 transitions. [2020-12-22 08:17:49,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:17:49,346 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:49,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:49,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:17:49,347 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:49,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:49,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1769009660, now seen corresponding path program 1 times [2020-12-22 08:17:49,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:49,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679123227] [2020-12-22 08:17:49,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:49,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:49,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679123227] [2020-12-22 08:17:49,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:49,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:17:49,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441045460] [2020-12-22 08:17:49,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:17:49,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:49,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:17:49,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:17:49,527 INFO L87 Difference]: Start difference. First operand 3075 states and 4368 transitions. Second operand 7 states. [2020-12-22 08:17:51,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:51,354 INFO L93 Difference]: Finished difference Result 11361 states and 16395 transitions. [2020-12-22 08:17:51,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:17:51,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-12-22 08:17:51,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:51,420 INFO L225 Difference]: With dead ends: 11361 [2020-12-22 08:17:51,421 INFO L226 Difference]: Without dead ends: 10157 [2020-12-22 08:17:51,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:17:51,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10157 states. [2020-12-22 08:17:51,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10157 to 3097. [2020-12-22 08:17:51,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3097 states. [2020-12-22 08:17:51,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 4399 transitions. [2020-12-22 08:17:51,879 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 4399 transitions. Word has length 52 [2020-12-22 08:17:51,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:51,879 INFO L481 AbstractCegarLoop]: Abstraction has 3097 states and 4399 transitions. [2020-12-22 08:17:51,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:17:51,880 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 4399 transitions. [2020-12-22 08:17:51,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:17:51,882 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:51,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:51,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:17:51,883 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:51,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:51,883 INFO L82 PathProgramCache]: Analyzing trace with hash -990817093, now seen corresponding path program 1 times [2020-12-22 08:17:51,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:51,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097054553] [2020-12-22 08:17:51,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:51,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:51,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097054553] [2020-12-22 08:17:51,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:51,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:17:51,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101669290] [2020-12-22 08:17:51,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:17:51,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:51,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:17:51,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:17:51,984 INFO L87 Difference]: Start difference. First operand 3097 states and 4399 transitions. Second operand 7 states. [2020-12-22 08:17:53,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:53,321 INFO L93 Difference]: Finished difference Result 10397 states and 14939 transitions. [2020-12-22 08:17:53,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:17:53,322 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-12-22 08:17:53,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:53,339 INFO L225 Difference]: With dead ends: 10397 [2020-12-22 08:17:53,339 INFO L226 Difference]: Without dead ends: 8966 [2020-12-22 08:17:53,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:17:53,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8966 states. [2020-12-22 08:17:53,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8966 to 3111. [2020-12-22 08:17:53,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3111 states. [2020-12-22 08:17:53,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4417 transitions. [2020-12-22 08:17:53,747 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4417 transitions. Word has length 52 [2020-12-22 08:17:53,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:53,747 INFO L481 AbstractCegarLoop]: Abstraction has 3111 states and 4417 transitions. [2020-12-22 08:17:53,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:17:53,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4417 transitions. [2020-12-22 08:17:53,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:17:53,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:53,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:53,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:17:53,751 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:53,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:53,751 INFO L82 PathProgramCache]: Analyzing trace with hash 851488073, now seen corresponding path program 1 times [2020-12-22 08:17:53,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:53,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786881359] [2020-12-22 08:17:53,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:53,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:53,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786881359] [2020-12-22 08:17:53,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:53,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:17:53,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134334417] [2020-12-22 08:17:53,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:17:53,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:53,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:17:53,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:17:53,905 INFO L87 Difference]: Start difference. First operand 3111 states and 4417 transitions. Second operand 8 states. [2020-12-22 08:17:55,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:55,438 INFO L93 Difference]: Finished difference Result 8292 states and 11955 transitions. [2020-12-22 08:17:55,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:17:55,438 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-12-22 08:17:55,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:55,451 INFO L225 Difference]: With dead ends: 8292 [2020-12-22 08:17:55,452 INFO L226 Difference]: Without dead ends: 5836 [2020-12-22 08:17:55,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:17:55,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2020-12-22 08:17:55,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 3111. [2020-12-22 08:17:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3111 states. [2020-12-22 08:17:55,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4412 transitions. [2020-12-22 08:17:55,875 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4412 transitions. Word has length 53 [2020-12-22 08:17:55,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:55,876 INFO L481 AbstractCegarLoop]: Abstraction has 3111 states and 4412 transitions. [2020-12-22 08:17:55,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:17:55,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4412 transitions. [2020-12-22 08:17:55,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:17:55,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:55,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:55,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:17:55,879 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:55,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:55,880 INFO L82 PathProgramCache]: Analyzing trace with hash 707290755, now seen corresponding path program 1 times [2020-12-22 08:17:55,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:55,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053944481] [2020-12-22 08:17:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:56,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053944481] [2020-12-22 08:17:56,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:56,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:17:56,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880784475] [2020-12-22 08:17:56,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:17:56,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:56,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:17:56,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:17:56,002 INFO L87 Difference]: Start difference. First operand 3111 states and 4412 transitions. Second operand 9 states. [2020-12-22 08:17:57,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:57,942 INFO L93 Difference]: Finished difference Result 12104 states and 17651 transitions. [2020-12-22 08:17:57,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:17:57,942 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-12-22 08:17:57,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:57,960 INFO L225 Difference]: With dead ends: 12104 [2020-12-22 08:17:57,960 INFO L226 Difference]: Without dead ends: 9920 [2020-12-22 08:17:57,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:17:57,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9920 states. [2020-12-22 08:17:58,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9920 to 3077. [2020-12-22 08:17:58,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3077 states. [2020-12-22 08:17:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4366 transitions. [2020-12-22 08:17:58,471 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4366 transitions. Word has length 53 [2020-12-22 08:17:58,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:58,471 INFO L481 AbstractCegarLoop]: Abstraction has 3077 states and 4366 transitions. [2020-12-22 08:17:58,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:17:58,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4366 transitions. [2020-12-22 08:17:58,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:17:58,474 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:58,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:58,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:17:58,475 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:58,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:58,475 INFO L82 PathProgramCache]: Analyzing trace with hash -843330776, now seen corresponding path program 1 times [2020-12-22 08:17:58,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:58,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230652167] [2020-12-22 08:17:58,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:58,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230652167] [2020-12-22 08:17:58,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:58,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:17:58,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775485668] [2020-12-22 08:17:58,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:17:58,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:58,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:17:58,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:17:58,635 INFO L87 Difference]: Start difference. First operand 3077 states and 4366 transitions. Second operand 9 states. [2020-12-22 08:18:00,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:00,870 INFO L93 Difference]: Finished difference Result 6844 states and 9900 transitions. [2020-12-22 08:18:00,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:18:00,870 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-12-22 08:18:00,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:00,880 INFO L225 Difference]: With dead ends: 6844 [2020-12-22 08:18:00,880 INFO L226 Difference]: Without dead ends: 6839 [2020-12-22 08:18:00,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:18:00,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6839 states. [2020-12-22 08:18:01,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6839 to 3077. [2020-12-22 08:18:01,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3077 states. [2020-12-22 08:18:01,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4364 transitions. [2020-12-22 08:18:01,472 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4364 transitions. Word has length 53 [2020-12-22 08:18:01,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:01,473 INFO L481 AbstractCegarLoop]: Abstraction has 3077 states and 4364 transitions. [2020-12-22 08:18:01,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:18:01,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4364 transitions. [2020-12-22 08:18:01,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:18:01,476 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:01,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:01,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:18:01,476 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:01,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:01,477 INFO L82 PathProgramCache]: Analyzing trace with hash 686286721, now seen corresponding path program 1 times [2020-12-22 08:18:01,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:01,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100648629] [2020-12-22 08:18:01,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:01,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100648629] [2020-12-22 08:18:01,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:01,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:18:01,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448150789] [2020-12-22 08:18:01,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:18:01,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:01,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:18:01,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:01,543 INFO L87 Difference]: Start difference. First operand 3077 states and 4364 transitions. Second operand 3 states. [2020-12-22 08:18:02,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:02,029 INFO L93 Difference]: Finished difference Result 4211 states and 5973 transitions. [2020-12-22 08:18:02,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:18:02,030 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 08:18:02,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:02,034 INFO L225 Difference]: With dead ends: 4211 [2020-12-22 08:18:02,034 INFO L226 Difference]: Without dead ends: 2972 [2020-12-22 08:18:02,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:02,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2020-12-22 08:18:02,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2970. [2020-12-22 08:18:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2970 states. [2020-12-22 08:18:02,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4138 transitions. [2020-12-22 08:18:02,510 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4138 transitions. Word has length 54 [2020-12-22 08:18:02,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:02,510 INFO L481 AbstractCegarLoop]: Abstraction has 2970 states and 4138 transitions. [2020-12-22 08:18:02,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:18:02,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4138 transitions. [2020-12-22 08:18:02,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:18:02,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:02,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:02,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:18:02,514 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:02,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:02,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1437497679, now seen corresponding path program 1 times [2020-12-22 08:18:02,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:02,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834635101] [2020-12-22 08:18:02,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:02,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:02,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834635101] [2020-12-22 08:18:02,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:02,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:18:02,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694275618] [2020-12-22 08:18:02,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:18:02,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:02,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:18:02,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:02,564 INFO L87 Difference]: Start difference. First operand 2970 states and 4138 transitions. Second operand 3 states. [2020-12-22 08:18:02,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:02,922 INFO L93 Difference]: Finished difference Result 4269 states and 5981 transitions. [2020-12-22 08:18:02,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:18:02,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 08:18:02,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:02,926 INFO L225 Difference]: With dead ends: 4269 [2020-12-22 08:18:02,926 INFO L226 Difference]: Without dead ends: 2977 [2020-12-22 08:18:02,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:02,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-12-22 08:18:03,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 2970. [2020-12-22 08:18:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2970 states. [2020-12-22 08:18:03,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4085 transitions. [2020-12-22 08:18:03,403 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4085 transitions. Word has length 54 [2020-12-22 08:18:03,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:03,403 INFO L481 AbstractCegarLoop]: Abstraction has 2970 states and 4085 transitions. [2020-12-22 08:18:03,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:18:03,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4085 transitions. [2020-12-22 08:18:03,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:18:03,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:03,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:03,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:18:03,406 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:03,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:03,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1063900683, now seen corresponding path program 1 times [2020-12-22 08:18:03,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:03,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339176522] [2020-12-22 08:18:03,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:03,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339176522] [2020-12-22 08:18:03,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:03,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:18:03,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242979699] [2020-12-22 08:18:03,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:18:03,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:03,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:18:03,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:03,454 INFO L87 Difference]: Start difference. First operand 2970 states and 4085 transitions. Second operand 3 states. [2020-12-22 08:18:03,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:03,827 INFO L93 Difference]: Finished difference Result 4322 states and 5972 transitions. [2020-12-22 08:18:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:18:03,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 08:18:03,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:03,831 INFO L225 Difference]: With dead ends: 4322 [2020-12-22 08:18:03,831 INFO L226 Difference]: Without dead ends: 2976 [2020-12-22 08:18:03,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:03,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-12-22 08:18:04,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 2970. [2020-12-22 08:18:04,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2970 states. [2020-12-22 08:18:04,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4039 transitions. [2020-12-22 08:18:04,193 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4039 transitions. Word has length 54 [2020-12-22 08:18:04,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:04,193 INFO L481 AbstractCegarLoop]: Abstraction has 2970 states and 4039 transitions. [2020-12-22 08:18:04,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:18:04,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4039 transitions. [2020-12-22 08:18:04,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:18:04,196 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:04,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:04,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:18:04,197 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:04,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:04,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1050867566, now seen corresponding path program 1 times [2020-12-22 08:18:04,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:04,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348145297] [2020-12-22 08:18:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:04,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348145297] [2020-12-22 08:18:04,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:04,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:18:04,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697097590] [2020-12-22 08:18:04,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:18:04,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:04,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:18:04,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:04,242 INFO L87 Difference]: Start difference. First operand 2970 states and 4039 transitions. Second operand 3 states. [2020-12-22 08:18:04,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:04,810 INFO L93 Difference]: Finished difference Result 5648 states and 7793 transitions. [2020-12-22 08:18:04,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:18:04,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 08:18:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:04,815 INFO L225 Difference]: With dead ends: 5648 [2020-12-22 08:18:04,816 INFO L226 Difference]: Without dead ends: 4049 [2020-12-22 08:18:04,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:04,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4049 states. [2020-12-22 08:18:05,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4049 to 2909. [2020-12-22 08:18:05,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2909 states. [2020-12-22 08:18:05,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2909 states to 2909 states and 3957 transitions. [2020-12-22 08:18:05,153 INFO L78 Accepts]: Start accepts. Automaton has 2909 states and 3957 transitions. Word has length 56 [2020-12-22 08:18:05,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:05,154 INFO L481 AbstractCegarLoop]: Abstraction has 2909 states and 3957 transitions. [2020-12-22 08:18:05,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:18:05,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2909 states and 3957 transitions. [2020-12-22 08:18:05,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:18:05,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:05,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:05,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:18:05,157 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:05,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:05,158 INFO L82 PathProgramCache]: Analyzing trace with hash 762441294, now seen corresponding path program 1 times [2020-12-22 08:18:05,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:05,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128773563] [2020-12-22 08:18:05,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:05,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:05,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128773563] [2020-12-22 08:18:05,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:05,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:18:05,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796799608] [2020-12-22 08:18:05,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:18:05,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:05,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:18:05,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:05,197 INFO L87 Difference]: Start difference. First operand 2909 states and 3957 transitions. Second operand 3 states. [2020-12-22 08:18:06,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:06,220 INFO L93 Difference]: Finished difference Result 5516 states and 7612 transitions. [2020-12-22 08:18:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:18:06,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 08:18:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:06,227 INFO L225 Difference]: With dead ends: 5516 [2020-12-22 08:18:06,227 INFO L226 Difference]: Without dead ends: 3964 [2020-12-22 08:18:06,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:06,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3964 states. [2020-12-22 08:18:06,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3964 to 2822. [2020-12-22 08:18:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2822 states. [2020-12-22 08:18:06,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 3845 transitions. [2020-12-22 08:18:06,846 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 3845 transitions. Word has length 56 [2020-12-22 08:18:06,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:06,847 INFO L481 AbstractCegarLoop]: Abstraction has 2822 states and 3845 transitions. [2020-12-22 08:18:06,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:18:06,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 3845 transitions. [2020-12-22 08:18:06,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:18:06,850 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:06,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:06,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:18:06,851 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:06,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:06,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1334330377, now seen corresponding path program 1 times [2020-12-22 08:18:06,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:06,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503223066] [2020-12-22 08:18:06,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:07,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503223066] [2020-12-22 08:18:07,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:07,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:18:07,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290042182] [2020-12-22 08:18:07,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:18:07,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:07,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:18:07,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:18:07,658 INFO L87 Difference]: Start difference. First operand 2822 states and 3845 transitions. Second operand 19 states. [2020-12-22 08:18:07,853 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-12-22 08:18:08,853 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-22 08:18:09,138 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 08:18:09,314 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 08:18:10,029 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-12-22 08:18:15,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:15,175 INFO L93 Difference]: Finished difference Result 9062 states and 12707 transitions. [2020-12-22 08:18:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:18:15,176 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56 [2020-12-22 08:18:15,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:15,184 INFO L225 Difference]: With dead ends: 9062 [2020-12-22 08:18:15,184 INFO L226 Difference]: Without dead ends: 9058 [2020-12-22 08:18:15,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=314, Invalid=1326, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:18:15,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9058 states. [2020-12-22 08:18:15,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9058 to 2834. [2020-12-22 08:18:15,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2834 states. [2020-12-22 08:18:15,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2834 states to 2834 states and 3862 transitions. [2020-12-22 08:18:15,694 INFO L78 Accepts]: Start accepts. Automaton has 2834 states and 3862 transitions. Word has length 56 [2020-12-22 08:18:15,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:15,695 INFO L481 AbstractCegarLoop]: Abstraction has 2834 states and 3862 transitions. [2020-12-22 08:18:15,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:18:15,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2834 states and 3862 transitions. [2020-12-22 08:18:15,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:18:15,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:15,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:15,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:18:15,698 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:15,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:15,698 INFO L82 PathProgramCache]: Analyzing trace with hash -2094820174, now seen corresponding path program 1 times [2020-12-22 08:18:15,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:15,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507203971] [2020-12-22 08:18:15,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:16,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507203971] [2020-12-22 08:18:16,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:16,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:18:16,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616013061] [2020-12-22 08:18:16,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:18:16,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:16,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:18:16,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:18:16,371 INFO L87 Difference]: Start difference. First operand 2834 states and 3862 transitions. Second operand 19 states. [2020-12-22 08:18:16,644 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-12-22 08:18:17,521 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:18:17,788 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-12-22 08:18:18,123 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:18:18,338 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:18:18,604 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:18:18,832 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-12-22 08:18:19,060 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-12-22 08:18:19,333 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-12-22 08:18:22,188 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 08:18:23,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:23,451 INFO L93 Difference]: Finished difference Result 7383 states and 10317 transitions. [2020-12-22 08:18:23,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:18:23,452 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56 [2020-12-22 08:18:23,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:23,460 INFO L225 Difference]: With dead ends: 7383 [2020-12-22 08:18:23,460 INFO L226 Difference]: Without dead ends: 7377 [2020-12-22 08:18:23,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=335, Invalid=1147, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 08:18:23,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7377 states. [2020-12-22 08:18:23,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7377 to 2834. [2020-12-22 08:18:23,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2834 states. [2020-12-22 08:18:23,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2834 states to 2834 states and 3861 transitions. [2020-12-22 08:18:23,960 INFO L78 Accepts]: Start accepts. Automaton has 2834 states and 3861 transitions. Word has length 56 [2020-12-22 08:18:23,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:23,961 INFO L481 AbstractCegarLoop]: Abstraction has 2834 states and 3861 transitions. [2020-12-22 08:18:23,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:18:23,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2834 states and 3861 transitions. [2020-12-22 08:18:23,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:18:23,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:23,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:23,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:18:23,964 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:23,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:23,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1561708229, now seen corresponding path program 1 times [2020-12-22 08:18:23,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:23,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862416928] [2020-12-22 08:18:23,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:25,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862416928] [2020-12-22 08:18:25,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:25,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:18:25,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903253429] [2020-12-22 08:18:25,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:18:25,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:25,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:18:25,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:18:25,138 INFO L87 Difference]: Start difference. First operand 2834 states and 3861 transitions. Second operand 16 states. [2020-12-22 08:18:25,512 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-12-22 08:18:25,846 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-12-22 08:18:26,183 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-12-22 08:18:26,578 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2020-12-22 08:18:26,974 WARN L197 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2020-12-22 08:18:27,484 WARN L197 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2020-12-22 08:18:28,096 WARN L197 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2020-12-22 08:18:28,692 WARN L197 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2020-12-22 08:18:29,227 WARN L197 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2020-12-22 08:18:29,813 WARN L197 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 78 [2020-12-22 08:18:30,246 WARN L197 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2020-12-22 08:18:30,759 WARN L197 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2020-12-22 08:18:31,438 WARN L197 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-12-22 08:18:31,884 WARN L197 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-12-22 08:18:35,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:35,185 INFO L93 Difference]: Finished difference Result 8159 states and 11363 transitions. [2020-12-22 08:18:35,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:18:35,187 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2020-12-22 08:18:35,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:35,196 INFO L225 Difference]: With dead ends: 8159 [2020-12-22 08:18:35,196 INFO L226 Difference]: Without dead ends: 7961 [2020-12-22 08:18:35,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=239, Invalid=691, Unknown=0, NotChecked=0, Total=930 [2020-12-22 08:18:35,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7961 states. [2020-12-22 08:18:35,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7961 to 2822. [2020-12-22 08:18:35,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2822 states. [2020-12-22 08:18:35,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 3848 transitions. [2020-12-22 08:18:35,855 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 3848 transitions. Word has length 56 [2020-12-22 08:18:35,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:35,855 INFO L481 AbstractCegarLoop]: Abstraction has 2822 states and 3848 transitions. [2020-12-22 08:18:35,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:18:35,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 3848 transitions. [2020-12-22 08:18:35,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:18:35,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:35,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:35,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:18:35,858 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:35,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:35,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1558288919, now seen corresponding path program 1 times [2020-12-22 08:18:35,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:35,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370019471] [2020-12-22 08:18:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:36,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370019471] [2020-12-22 08:18:36,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:36,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:18:36,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184562197] [2020-12-22 08:18:36,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:18:36,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:36,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:18:36,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:18:36,510 INFO L87 Difference]: Start difference. First operand 2822 states and 3848 transitions. Second operand 19 states. [2020-12-22 08:18:36,740 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-12-22 08:18:37,578 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:18:38,395 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 08:18:44,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:44,145 INFO L93 Difference]: Finished difference Result 7926 states and 11095 transitions. [2020-12-22 08:18:44,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:18:44,146 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56 [2020-12-22 08:18:44,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:44,155 INFO L225 Difference]: With dead ends: 7926 [2020-12-22 08:18:44,155 INFO L226 Difference]: Without dead ends: 7922 [2020-12-22 08:18:44,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=273, Invalid=987, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 08:18:44,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7922 states. [2020-12-22 08:18:44,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7922 to 2822. [2020-12-22 08:18:44,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2822 states. [2020-12-22 08:18:44,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 3847 transitions. [2020-12-22 08:18:44,890 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 3847 transitions. Word has length 56 [2020-12-22 08:18:44,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:44,891 INFO L481 AbstractCegarLoop]: Abstraction has 2822 states and 3847 transitions. [2020-12-22 08:18:44,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:18:44,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 3847 transitions. [2020-12-22 08:18:44,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:18:44,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:44,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:44,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:18:44,894 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:44,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:44,894 INFO L82 PathProgramCache]: Analyzing trace with hash -2012833268, now seen corresponding path program 1 times [2020-12-22 08:18:44,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:44,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20658289] [2020-12-22 08:18:44,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:45,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20658289] [2020-12-22 08:18:45,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:45,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 08:18:45,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187159681] [2020-12-22 08:18:45,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:18:45,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:45,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:18:45,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:18:45,449 INFO L87 Difference]: Start difference. First operand 2822 states and 3847 transitions. Second operand 14 states. [2020-12-22 08:18:46,265 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:18:49,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:49,669 INFO L93 Difference]: Finished difference Result 5760 states and 7967 transitions. [2020-12-22 08:18:49,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 08:18:49,671 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2020-12-22 08:18:49,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:49,676 INFO L225 Difference]: With dead ends: 5760 [2020-12-22 08:18:49,676 INFO L226 Difference]: Without dead ends: 5756 [2020-12-22 08:18:49,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-12-22 08:18:49,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5756 states. [2020-12-22 08:18:50,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5756 to 2818. [2020-12-22 08:18:50,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2818 states. [2020-12-22 08:18:50,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 3843 transitions. [2020-12-22 08:18:50,344 INFO L78 Accepts]: Start accepts. Automaton has 2818 states and 3843 transitions. Word has length 57 [2020-12-22 08:18:50,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:50,345 INFO L481 AbstractCegarLoop]: Abstraction has 2818 states and 3843 transitions. [2020-12-22 08:18:50,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 08:18:50,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2818 states and 3843 transitions. [2020-12-22 08:18:50,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:18:50,347 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:50,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:50,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:18:50,348 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:50,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:50,348 INFO L82 PathProgramCache]: Analyzing trace with hash 988215367, now seen corresponding path program 1 times [2020-12-22 08:18:50,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:50,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052605142] [2020-12-22 08:18:50,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:50,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:50,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052605142] [2020-12-22 08:18:50,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:50,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 08:18:50,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309390662] [2020-12-22 08:18:50,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:18:50,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:50,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:18:50,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:18:50,844 INFO L87 Difference]: Start difference. First operand 2818 states and 3843 transitions. Second operand 13 states. [2020-12-22 08:18:51,396 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:18:54,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:54,247 INFO L93 Difference]: Finished difference Result 7663 states and 10631 transitions. [2020-12-22 08:18:54,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:18:54,248 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-12-22 08:18:54,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:54,256 INFO L225 Difference]: With dead ends: 7663 [2020-12-22 08:18:54,256 INFO L226 Difference]: Without dead ends: 7428 [2020-12-22 08:18:54,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:18:54,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7428 states. [2020-12-22 08:18:54,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7428 to 2809. [2020-12-22 08:18:54,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2809 states. [2020-12-22 08:18:55,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 3831 transitions. [2020-12-22 08:18:55,002 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 3831 transitions. Word has length 57 [2020-12-22 08:18:55,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:55,002 INFO L481 AbstractCegarLoop]: Abstraction has 2809 states and 3831 transitions. [2020-12-22 08:18:55,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:18:55,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 3831 transitions. [2020-12-22 08:18:55,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:18:55,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:55,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:55,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:18:55,006 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:55,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:55,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1173720509, now seen corresponding path program 1 times [2020-12-22 08:18:55,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:55,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796604108] [2020-12-22 08:18:55,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:55,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796604108] [2020-12-22 08:18:55,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:55,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:18:55,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940378971] [2020-12-22 08:18:55,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:18:55,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:55,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:18:55,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:55,057 INFO L87 Difference]: Start difference. First operand 2809 states and 3831 transitions. Second operand 3 states. [2020-12-22 08:18:56,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:56,345 INFO L93 Difference]: Finished difference Result 6398 states and 8863 transitions. [2020-12-22 08:18:56,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:18:56,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 08:18:56,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:56,350 INFO L225 Difference]: With dead ends: 6398 [2020-12-22 08:18:56,350 INFO L226 Difference]: Without dead ends: 4416 [2020-12-22 08:18:56,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:56,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4416 states. [2020-12-22 08:18:57,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4416 to 4414. [2020-12-22 08:18:57,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4414 states. [2020-12-22 08:18:57,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4414 states to 4414 states and 6006 transitions. [2020-12-22 08:18:57,591 INFO L78 Accepts]: Start accepts. Automaton has 4414 states and 6006 transitions. Word has length 63 [2020-12-22 08:18:57,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:57,591 INFO L481 AbstractCegarLoop]: Abstraction has 4414 states and 6006 transitions. [2020-12-22 08:18:57,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:18:57,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4414 states and 6006 transitions. [2020-12-22 08:18:57,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:18:57,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:57,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:57,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 08:18:57,596 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:57,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:57,596 INFO L82 PathProgramCache]: Analyzing trace with hash 5757662, now seen corresponding path program 1 times [2020-12-22 08:18:57,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:57,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797984447] [2020-12-22 08:18:57,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:57,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:57,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797984447] [2020-12-22 08:18:57,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:57,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:18:57,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334024448] [2020-12-22 08:18:57,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:18:57,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:57,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:18:57,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:18:57,672 INFO L87 Difference]: Start difference. First operand 4414 states and 6006 transitions. Second operand 5 states. [2020-12-22 08:18:58,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:58,951 INFO L93 Difference]: Finished difference Result 4420 states and 6009 transitions. [2020-12-22 08:18:58,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:18:58,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-22 08:18:58,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:58,956 INFO L225 Difference]: With dead ends: 4420 [2020-12-22 08:18:58,956 INFO L226 Difference]: Without dead ends: 4036 [2020-12-22 08:18:58,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:18:58,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4036 states. [2020-12-22 08:19:00,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4036 to 4032. [2020-12-22 08:19:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4032 states. [2020-12-22 08:19:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4032 states to 4032 states and 5493 transitions. [2020-12-22 08:19:00,095 INFO L78 Accepts]: Start accepts. Automaton has 4032 states and 5493 transitions. Word has length 64 [2020-12-22 08:19:00,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:00,095 INFO L481 AbstractCegarLoop]: Abstraction has 4032 states and 5493 transitions. [2020-12-22 08:19:00,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:19:00,095 INFO L276 IsEmpty]: Start isEmpty. Operand 4032 states and 5493 transitions. [2020-12-22 08:19:00,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:19:00,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:00,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:19:00,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 08:19:00,099 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:00,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:00,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1852933729, now seen corresponding path program 1 times [2020-12-22 08:19:00,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:00,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494254324] [2020-12-22 08:19:00,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:00,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:00,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494254324] [2020-12-22 08:19:00,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:00,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:19:00,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424047824] [2020-12-22 08:19:00,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:19:00,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:00,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:19:00,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:00,148 INFO L87 Difference]: Start difference. First operand 4032 states and 5493 transitions. Second operand 3 states. [2020-12-22 08:19:02,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:02,354 INFO L93 Difference]: Finished difference Result 10258 states and 14117 transitions. [2020-12-22 08:19:02,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:19:02,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 08:19:02,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:02,363 INFO L225 Difference]: With dead ends: 10258 [2020-12-22 08:19:02,363 INFO L226 Difference]: Without dead ends: 6996 [2020-12-22 08:19:02,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:02,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6996 states. [2020-12-22 08:19:04,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6996 to 6550. [2020-12-22 08:19:04,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6550 states. [2020-12-22 08:19:04,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6550 states to 6550 states and 8952 transitions. [2020-12-22 08:19:04,358 INFO L78 Accepts]: Start accepts. Automaton has 6550 states and 8952 transitions. Word has length 65 [2020-12-22 08:19:04,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:04,359 INFO L481 AbstractCegarLoop]: Abstraction has 6550 states and 8952 transitions. [2020-12-22 08:19:04,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:19:04,359 INFO L276 IsEmpty]: Start isEmpty. Operand 6550 states and 8952 transitions. [2020-12-22 08:19:04,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:19:04,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:04,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:19:04,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 08:19:04,363 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:04,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:04,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1984326042, now seen corresponding path program 1 times [2020-12-22 08:19:04,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:04,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877963236] [2020-12-22 08:19:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:04,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877963236] [2020-12-22 08:19:04,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:04,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:19:04,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465056073] [2020-12-22 08:19:04,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:19:04,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:04,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:19:04,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:04,416 INFO L87 Difference]: Start difference. First operand 6550 states and 8952 transitions. Second operand 3 states. [2020-12-22 08:19:08,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:08,396 INFO L93 Difference]: Finished difference Result 17514 states and 24034 transitions. [2020-12-22 08:19:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:19:08,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 08:19:08,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:08,410 INFO L225 Difference]: With dead ends: 17514 [2020-12-22 08:19:08,410 INFO L226 Difference]: Without dead ends: 11734 [2020-12-22 08:19:08,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:08,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11734 states. [2020-12-22 08:19:11,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11734 to 10844. [2020-12-22 08:19:11,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10844 states. [2020-12-22 08:19:11,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10844 states to 10844 states and 14788 transitions. [2020-12-22 08:19:11,893 INFO L78 Accepts]: Start accepts. Automaton has 10844 states and 14788 transitions. Word has length 67 [2020-12-22 08:19:11,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:11,894 INFO L481 AbstractCegarLoop]: Abstraction has 10844 states and 14788 transitions. [2020-12-22 08:19:11,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:19:11,894 INFO L276 IsEmpty]: Start isEmpty. Operand 10844 states and 14788 transitions. [2020-12-22 08:19:11,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:19:11,896 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:11,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:19:11,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 08:19:11,896 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:11,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:11,897 INFO L82 PathProgramCache]: Analyzing trace with hash -456053566, now seen corresponding path program 1 times [2020-12-22 08:19:11,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:11,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686332375] [2020-12-22 08:19:11,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:12,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686332375] [2020-12-22 08:19:12,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:12,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:19:12,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914821370] [2020-12-22 08:19:12,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:19:12,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:12,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:19:12,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:19:12,023 INFO L87 Difference]: Start difference. First operand 10844 states and 14788 transitions. Second operand 6 states. [2020-12-22 08:19:19,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:19,704 INFO L93 Difference]: Finished difference Result 19800 states and 26491 transitions. [2020-12-22 08:19:19,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:19:19,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-12-22 08:19:19,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:19,729 INFO L225 Difference]: With dead ends: 19800 [2020-12-22 08:19:19,729 INFO L226 Difference]: Without dead ends: 19798 [2020-12-22 08:19:19,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:19:19,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19798 states. [2020-12-22 08:19:24,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19798 to 11336. [2020-12-22 08:19:24,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11336 states. [2020-12-22 08:19:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11336 states to 11336 states and 15280 transitions. [2020-12-22 08:19:24,155 INFO L78 Accepts]: Start accepts. Automaton has 11336 states and 15280 transitions. Word has length 69 [2020-12-22 08:19:24,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:24,155 INFO L481 AbstractCegarLoop]: Abstraction has 11336 states and 15280 transitions. [2020-12-22 08:19:24,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:19:24,155 INFO L276 IsEmpty]: Start isEmpty. Operand 11336 states and 15280 transitions. [2020-12-22 08:19:24,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:19:24,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:24,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:19:24,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 08:19:24,158 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:24,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:24,159 INFO L82 PathProgramCache]: Analyzing trace with hash 789084021, now seen corresponding path program 1 times [2020-12-22 08:19:24,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:24,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565598017] [2020-12-22 08:19:24,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:24,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565598017] [2020-12-22 08:19:24,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:24,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:19:24,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301951391] [2020-12-22 08:19:24,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:19:24,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:24,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:19:24,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:24,217 INFO L87 Difference]: Start difference. First operand 11336 states and 15280 transitions. Second operand 3 states. [2020-12-22 08:19:32,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:32,065 INFO L93 Difference]: Finished difference Result 29684 states and 39854 transitions. [2020-12-22 08:19:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:19:32,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 08:19:32,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:32,095 INFO L225 Difference]: With dead ends: 29684 [2020-12-22 08:19:32,095 INFO L226 Difference]: Without dead ends: 18974 [2020-12-22 08:19:32,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:32,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18974 states. [2020-12-22 08:19:39,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18974 to 18644. [2020-12-22 08:19:39,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18644 states. [2020-12-22 08:19:39,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18644 states to 18644 states and 24516 transitions. [2020-12-22 08:19:39,502 INFO L78 Accepts]: Start accepts. Automaton has 18644 states and 24516 transitions. Word has length 70 [2020-12-22 08:19:39,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:39,502 INFO L481 AbstractCegarLoop]: Abstraction has 18644 states and 24516 transitions. [2020-12-22 08:19:39,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:19:39,502 INFO L276 IsEmpty]: Start isEmpty. Operand 18644 states and 24516 transitions. [2020-12-22 08:19:39,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 08:19:39,506 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:39,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:19:39,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 08:19:39,506 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:39,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:39,506 INFO L82 PathProgramCache]: Analyzing trace with hash 2099371189, now seen corresponding path program 1 times [2020-12-22 08:19:39,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:39,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352304268] [2020-12-22 08:19:39,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:19:39,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352304268] [2020-12-22 08:19:39,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:39,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:19:39,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057739035] [2020-12-22 08:19:39,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:19:39,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:39,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:19:39,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:39,568 INFO L87 Difference]: Start difference. First operand 18644 states and 24516 transitions. Second operand 3 states. [2020-12-22 08:19:50,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:50,984 INFO L93 Difference]: Finished difference Result 46428 states and 60986 transitions. [2020-12-22 08:19:50,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:19:50,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 08:19:50,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:51,026 INFO L225 Difference]: With dead ends: 46428 [2020-12-22 08:19:51,026 INFO L226 Difference]: Without dead ends: 28386 [2020-12-22 08:19:51,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:51,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28386 states. [2020-12-22 08:20:01,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28386 to 26200. [2020-12-22 08:20:01,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26200 states. [2020-12-22 08:20:01,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26200 states to 26200 states and 34172 transitions. [2020-12-22 08:20:01,985 INFO L78 Accepts]: Start accepts. Automaton has 26200 states and 34172 transitions. Word has length 71 [2020-12-22 08:20:01,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:01,986 INFO L481 AbstractCegarLoop]: Abstraction has 26200 states and 34172 transitions. [2020-12-22 08:20:01,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:20:01,986 INFO L276 IsEmpty]: Start isEmpty. Operand 26200 states and 34172 transitions. [2020-12-22 08:20:01,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 08:20:01,993 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:01,993 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:20:01,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 08:20:01,993 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:01,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:01,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1072943688, now seen corresponding path program 1 times [2020-12-22 08:20:01,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:01,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829620145] [2020-12-22 08:20:01,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:02,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829620145] [2020-12-22 08:20:02,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681289919] [2020-12-22 08:20:02,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:20:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:02,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 08:20:02,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:20:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:02,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:20:02,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2020-12-22 08:20:02,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285612089] [2020-12-22 08:20:02,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:20:02,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:02,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:20:02,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:20:02,867 INFO L87 Difference]: Start difference. First operand 26200 states and 34172 transitions. Second operand 10 states. [2020-12-22 08:20:20,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:20,112 INFO L93 Difference]: Finished difference Result 56223 states and 73129 transitions. [2020-12-22 08:20:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:20:20,113 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-12-22 08:20:20,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:20,248 INFO L225 Difference]: With dead ends: 56223 [2020-12-22 08:20:20,249 INFO L226 Difference]: Without dead ends: 30577 [2020-12-22 08:20:20,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-12-22 08:20:20,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30577 states. [2020-12-22 08:20:31,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30577 to 23026. [2020-12-22 08:20:31,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23026 states. [2020-12-22 08:20:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23026 states to 23026 states and 29360 transitions. [2020-12-22 08:20:31,546 INFO L78 Accepts]: Start accepts. Automaton has 23026 states and 29360 transitions. Word has length 88 [2020-12-22 08:20:31,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:31,546 INFO L481 AbstractCegarLoop]: Abstraction has 23026 states and 29360 transitions. [2020-12-22 08:20:31,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:20:31,546 INFO L276 IsEmpty]: Start isEmpty. Operand 23026 states and 29360 transitions. [2020-12-22 08:20:31,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 08:20:31,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:31,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:20:31,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-22 08:20:31,781 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:31,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:31,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1070717863, now seen corresponding path program 1 times [2020-12-22 08:20:31,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:31,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679891698] [2020-12-22 08:20:31,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:31,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679891698] [2020-12-22 08:20:31,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650684018] [2020-12-22 08:20:31,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:20:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:32,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 08:20:32,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:20:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:32,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:20:32,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2020-12-22 08:20:32,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484892723] [2020-12-22 08:20:32,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:20:32,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:32,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:20:32,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:20:32,478 INFO L87 Difference]: Start difference. First operand 23026 states and 29360 transitions. Second operand 10 states. [2020-12-22 08:20:47,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:47,735 INFO L93 Difference]: Finished difference Result 56428 states and 71783 transitions. [2020-12-22 08:20:47,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:20:47,735 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-12-22 08:20:47,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:47,784 INFO L225 Difference]: With dead ends: 56428 [2020-12-22 08:20:47,785 INFO L226 Difference]: Without dead ends: 33988 [2020-12-22 08:20:47,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-12-22 08:20:47,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33988 states. [2020-12-22 08:20:57,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33988 to 24410. [2020-12-22 08:20:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24410 states. [2020-12-22 08:20:57,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24410 states to 24410 states and 30849 transitions. [2020-12-22 08:20:57,784 INFO L78 Accepts]: Start accepts. Automaton has 24410 states and 30849 transitions. Word has length 89 [2020-12-22 08:20:57,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:57,785 INFO L481 AbstractCegarLoop]: Abstraction has 24410 states and 30849 transitions. [2020-12-22 08:20:57,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:20:57,785 INFO L276 IsEmpty]: Start isEmpty. Operand 24410 states and 30849 transitions. [2020-12-22 08:20:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 08:20:57,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:57,794 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:20:58,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:20:58,009 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:58,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:58,010 INFO L82 PathProgramCache]: Analyzing trace with hash -824018739, now seen corresponding path program 1 times [2020-12-22 08:20:58,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:58,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289214067] [2020-12-22 08:20:58,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 08:20:58,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289214067] [2020-12-22 08:20:58,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:58,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:20:58,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628430121] [2020-12-22 08:20:58,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:20:58,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:58,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:20:58,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:20:58,169 INFO L87 Difference]: Start difference. First operand 24410 states and 30849 transitions. Second operand 9 states. [2020-12-22 08:21:24,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:24,563 INFO L93 Difference]: Finished difference Result 73438 states and 92769 transitions. [2020-12-22 08:21:24,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:21:24,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-12-22 08:21:24,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:24,636 INFO L225 Difference]: With dead ends: 73438 [2020-12-22 08:21:24,636 INFO L226 Difference]: Without dead ends: 63448 [2020-12-22 08:21:24,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:21:24,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63448 states. [2020-12-22 08:21:34,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63448 to 24387. [2020-12-22 08:21:34,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24387 states. [2020-12-22 08:21:34,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24387 states to 24387 states and 30820 transitions. [2020-12-22 08:21:34,962 INFO L78 Accepts]: Start accepts. Automaton has 24387 states and 30820 transitions. Word has length 89 [2020-12-22 08:21:34,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:34,962 INFO L481 AbstractCegarLoop]: Abstraction has 24387 states and 30820 transitions. [2020-12-22 08:21:34,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:21:34,962 INFO L276 IsEmpty]: Start isEmpty. Operand 24387 states and 30820 transitions. [2020-12-22 08:21:34,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 08:21:34,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:34,968 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:21:34,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 08:21:34,968 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:34,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:34,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1971790555, now seen corresponding path program 1 times [2020-12-22 08:21:34,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:34,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496994203] [2020-12-22 08:21:34,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:35,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:35,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496994203] [2020-12-22 08:21:35,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:35,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:21:35,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679189111] [2020-12-22 08:21:35,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:21:35,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:35,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:21:35,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:21:35,222 INFO L87 Difference]: Start difference. First operand 24387 states and 30820 transitions. Second operand 10 states.